no 5 tolong ya kak. PLSSSSSSSSS

24/8 = x/6
8X = 144
x = 144/8
x = 18

●Problem Solving●

DE/CD = AB/AC
DE = AB/AC × CD
DE = 6 cm/8 cm × 24 cm
DE = 3/4 × 24 cm
DE = 18 cm